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Thank you Dean

Hi I have the same problem with the 26V on the top card. It will not burn 2708 EPROMs as they require the 26V in program mode. The PRG22 I am restoring has not been used for 30 years. Originally the PRG was dead and found the problem to be the switch mode power supply switching transistor...

Hi Did you fix the PRG 22 26volt problem In the process of restoring some old PS22s and 24s Many Thanks Dean